6R140 Master Rebuild Kit 2011-2021, new and ready to install. Fits the 6R140. Ships fast from the USA.
A 6R140 master rebuild kit is what you order when a Ford Super Duty transmission has to come out and be gone through completely: slipping in one or more gears, burnt fluid with friction material in the pan, flares on the upshifts, or a unit that is simply high mileage and leaking from several seals. This new kit covers 2011-2021 F-250 through F-550 trucks with the 6.7L Power Stroke or the gas V8s. The kit pictured includes friction plates and a new filter along with the sealing and gasket parts for a full overhaul.
The 6R140 makes six forward speeds with five clutches: forward, direct, intermediate, low and reverse, and overdrive, each applied by its own solenoid. Friction packs wear in all of them, and the lip seals, sealing rings and molded pistons that hold apply pressure harden with heat and age. A master kit renews those wear items at once so you are not resealing one circuit and leaving the rest marginal. It does not replace hard parts such as drums, the pump, planetaries or the valve body; those have to be inspected and replaced separately if they are damaged.
Do the simple checks first. Verify fluid level hot, then put a gauge on the line pressure port; Sonnax gives 90 to 260 psi as the 6R140 range. Two published cases are worth knowing: Transmission Digest traced a 2015 F-250 no-engagement-cold complaint to an undersized O-ring on a new filter neck, and Sonnax found a loose filter neck seal causing neutral on an incline. Both looked like hard failures and were not. Our 6R140 delayed engagement guide and 6R140 pump failure guide cover those checks before you commit to a rebuild.
The listing covers 2011-2021 6R140 applications. Ford changed valve body castings, separator plates and some hard parts during that run, and kit contents can vary by model year. Confirm your year and transmission against the kit, or send your year and VIN and we will check it before it ships. The full parts list for this transmission is on the 6R140 collection page.
| Fits | 6R140 2011-2021 |
| Part type | Master Rebuild Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing covers 2011-2021 6R140 transmissions in Ford Super Duty trucks. Send your year and VIN if you want us to confirm before ordering.
No. It is a master rebuild kit for frictions, seals, gaskets and the filter. Drums, the pump, planetaries and the valve body are separate parts and should be inspected during teardown.
Mercon LV only. Ford Component Sales lists the 6R140 at about 4 gallons total capacity; a rebuilt unit with an empty converter needs close to that.
If the solenoids or valve body were replaced, load the matching strategy code. In every case, clear adaptives and do a relearn drive.
Any worn drum or bushing, the cooler or at least a flushed cooler on a burnt unit, and a converter service. A shift kit is optional for towing trucks.
